Improved adherence and spreading of Saos-2 cells on polypropylene surfaces achieved by surface texturing and carbon nitride coating

J Mater Sci Mater Med. 2009 Nov;20(11):2337-47. doi: 10.1007/s10856-009-3792-3. Epub 2009 Jun 9.

Abstract

The adhesion and contact guidance of human primary osteogenic sarcoma cells (Saos-2) were characterized on smooth, microstructured (MST) and micro- and nano-structured (MNST) polypropylene (PP) and on the same samples with a silicon-doped carbon nitride (C(3)N(4)-Si) coating. Injection molding was used to pattern the PP surfaces and the coating was obtained by using ultra-short pulsed laser deposition (USPLD). Surfaces were characterized using atomic force microscopy and surface energy components were calculated according to the Owens-Wendt model. The results showed C(3)N(4)-Si coated surfaces to be significantly more hydrophilic than uncoated ones. In addition, there were 86% more cells in the smooth C(3)N(4)-Si coated PP compared to smooth uncoated PP and 551%/476% more cells with MST/MNST C(3)N(4)-Si coated PP than could be obtained with MST/MNST uncoated PP. Thus the adhesion, spreading and contact guidance of osteoblast-like cells was effectively improved by combining surface texturing and deposition of osteocompatible C(3)N(4)-Si coating.

MeSH terms

  • Biocompatible Materials / chemistry
  • Carbon / chemistry
  • Cell Adhesion
  • Cell Line, Tumor
  • Humans
  • Hydrophobic and Hydrophilic Interactions
  • Lasers
  • Microscopy, Atomic Force / methods
  • Microscopy, Electron, Scanning / methods
  • Nanoparticles / chemistry
  • Nanotechnology / methods
  • Nitriles / chemistry*
  • Nitrogen / chemistry
  • Osteoblasts / cytology
  • Polypropylenes / chemistry*
  • Silicon / chemistry
  • Surface Properties
  • Tetrazolium Salts / pharmacology
  • Thiazoles / pharmacology
  • Time Factors

Substances

  • Biocompatible Materials
  • Nitriles
  • Polypropylenes
  • Tetrazolium Salts
  • Thiazoles
  • cyanogen
  • Carbon
  • thiazolyl blue
  • Nitrogen
  • Silicon